That makes a lot of sense, Richard.

Phil - I appreciate that the road appears fine, but surely we shouldn't be second-guessing what the signs are for either?

I'll change it to "motor_vehicle=discouraged" as it's an accurate reflection of signage and probbably the most helpful way to tag it for different use cases.

I double-checked the OSM wiki and it says that "service=alley" is used for "a narrow service road usually located between properties to provide access things such as back gardens, rear entrances, fire exits, and storage areas". That sounds about right - it's narrow and provides access to gardens and carpark. Possibly "service=driveway" would work as an alternative, but there should be something there to discourage it from general routing.

Thanks - corrected.

There's a sign saying "unsuitable for motor vehicles" so I was indicating that it should not be used to route between the B5063 and the lane going onto Salters Mill. Perhaps "motor_vehicles=discouraged" would be better? Open to suggestions.

Fair point - I have applied the restriction also to the Shropshire side of the road.

Many thanks for the advice.

The crew I spoke to was specifically referring to Drakey Lane joining the B5063 to the tertiary way with ID 369403093. Their comment was "Lane not suitable for motor vehicles take next right turn [from the B5063] to Horton". There are no bin collections along Drakey Lane, and the farm bin can be collected from the tertiary road.

It would be useful to know how to tag roads that are unsuitable for general transit but may be used by the resident farmer (or whoever). In this case it might work to mark it as "highway=service" so that routing servers will enter the road only if the destination is on it. Would that be more reasonable?

Again this was information given to me by a local truck driver. I searched around and found this post about someone else who wondered how best to represent this in OSM: https://help.openstreetmap.org/questions/6287/unsuitable-for-vehicles-text-sign

However their solution wouldn't work as this road is not really a track, I believe it just has a really worn surface that gives rise to those signs.

Would appreciate any suggestions for how better to tag this road.

I'm basing my edits on a review by local refuse collection vehicle crews. They have identified roads that are unsuitable for use by their HGVs but for which the OSM data is not sufficiently tagged and is therefore causing them to be routed down roads that are in fact inaccessible to them. The end goal of this is to greatly improve the state of HGV routing in the area.

Please do not simply revert my edit until I can check mapillary!

I am grateful for pointers on accuracy or permitted sources and will happily follow such instructions.

Have undone these changes.

I had based this on the following streetview image. On checking the osm wiki I realise I'd misunderstood the category.

https://www.google.com/maps/@52.9096251,-2.5020162,3a,47.1y,157.13h,80.12t/data=!3m6!1e1!3m4!1sFySDAY-G5CSLR5LULZnPjQ!2e0!7i13312!8i6656